<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
</head>
<body>
<script>
  console.log(
    typeof null,
    typeof undefined,
    typeof true,
    typeof 1,
    typeof 'string',
    typeof Symbol(),
  );
</script>
</body>
</html>
